Table Of Contents

New and Changed Information

New and Changed Information

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This chapter lists the information that is new or was changed in this document for the current release, and where it is located.

Feature	Description	Changed in release	Where Documented
VSD	Virtual service domains (VSDs) allow you to classify and separate traffic for network services.	4.0(4)SV1(2)	Chapter 3, "Configuring VSD"
DHCP Snooping	Dynamic Host Configuration Protocol (DHCP) snooping acts like a firewall between untrusted hosts and trusted DHCP servers.	4.0(4)SV1(2)	Chapter 12, "Configuring DHCP Snooping"
Dynamic ARP Inspection (DAI)	Dynamic ARP inspection (DAI) provides IP communication within a Layer 2 broadcast domain by mapping an IP address to a MAC address.	4.0(4)SV1(2)	Chapter 13, "Configuring Dynamic ARP Inspection"
IP Source Guard	IP Source Guard is a per-interface traffic permit filter for IP and MAC addresses.	4.0(4)SV1(2)	Chapter 14, "Configuring IP Source Guard"